BookSwap

Features

• Search across a catalog of 28M+ books
• Build and manage your personal library
• Send and receive swap offers
• Track swap offers from request to completion
• View completed swap history
• Receive push notifications for offers and updates
• Secure authentication
• Optimized image loading and caching
• Network-aware error handling and request retries
• Multi-language support

Screenshots

Tech Stack

Layer	Technologies
Mobile	React Native, Expo
Language	TypeScript
Navigation	React Navigation
Backend	Python, Flask
Database	PostgreSQL
Notifications	Expo Push Notifications
Authentication	JWT

Engineering Highlights

BookSwap is a full-featured mobile application built around a complete book exchange workflow.

• Designed and implemented the end-to-end swap workflow
• Integrated search across a 28M+ book catalog
• Built authenticated API communication and protected application flows
• Implemented image caching to improve mobile performance
• Added network-aware request handling with retries and timeouts
• Integrated Expo push notifications for swap activity
• Implemented internationalization
• Optimized list rendering and image-heavy screens for mobile devices

Status

BookSwap has been submitted to the Apple App Store and is currently under review.

© 2026 Zeynep Dündar. All rights reserved.